Make mini cakes. Prepare batter following recipe directions. Bake and cool mini cakes. Prepare buttercream icing following recipe directions. Use spatula and icing to attach skull halves together.
Decorate mini cakes. Prepare confectioners? sugar glaze icing following recipe directions. Tint gray. Use brush to brush tinted glaze on mini cakes. Let dry 20 minutes. Repeat for a thicker coating if necessary.